Pleurotus ostreatus bacterial chloasma is commonly known as yellow mushroom disease in the production of the disease, the disease is fast onset, spread rapidly, from the young mushroom period to maturity can be disease. According to the survey, the loss can reach more than 50% in serious cases.
First, the symptoms
Pleurotus ostreatus is a bacterial disease caused by Pseudomonas spp. The symptom is that the surface of the mushroom body appears yellowish spots on the surface. When the humidity is high, the diseased site has a sticky wet feeling and penetrates into the tissues. Body rot, accompanied by thick secretions, emitting a foul odor, affect the appearance of oyster mushrooms, resulting in loss of food value.
Second, the law of occurrence
The disease often occurs in the period of 3-5 months in the production of Pleurotus ostreatus; the incidence is heavy under conditions of high temperature, high humidity, and poor ventilation, and it often develops rapidly after heavy fog or sandstorm weather; the degree of morbidity varies among breeds, usually the incidence of black varieties is high, Severe; planting a long history of mushroom field, the incidence of heavy, especially in the same species for many years, the level of disease resistance decreased, easy to disease; improper watering cultivation management, such as multiple pouring to make mushroom body surface and body water saturation , to promote the growth of bacteria. In addition, mushroom mosquitoes are also insect mediators that spread pathogens, and can be aggravated. When the mushrooms in the house become serious, the occurrence of the disease is also heavy.
Third, prevention and control points
1, spring prone to haze, widow, rain, sand and dust weather, affecting the normal ventilation within the mushroom house, resulting in the boring environment conducive to the spread of bacterial mushroom chloasma, so remind farmers to prevent and control.
2. Reasonable water spray and ventilation: The water source should be clean, spray water should be sprayed, and at the same time it should be coordinated with the ventilation. It is necessary to avoid the stagnation of stagnant water and the moisture in the greenhouse, and to maintain the humidity of the mushroom shed.
3, strengthen the inspection, early detection and removal of mushrooms, while paying attention to the environment clean, to delay the spread of the disease, reduce the damage.
4. Use physical control techniques such as insect nets, yellow boards, and trap lights to block, trap and kill mushrooms and flies, and reduce the transmission of mediators.
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